The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2004
Filed:
Oct. 09, 2003
Applicant:
Inventors:
Shozo Katsuki, Yamaguchi, JP;
Toshihiko Anno, Yamaguchi, JP;
Osamu Nakayama, Tokyo, JP;
Hiroaki Yamaguchi, Tokyo, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 3/10 ;
U.S. Cl.
CPC ...
B05D 3/10 ;
Abstract
A method of surface treating a polyimide film to impart improved adhesion to metal which comprises treating the surface of a polyimide film having a biphenyltetracarboxylic acid component by contact to a solution containing potassium permanganate and/or sodium permanganate and potassium hydroxide and/or sodium hydroxide and treating said surface with an acid.